Utilization of Three Maturities of Alfalfa by Dairy Cows Fed Rations that Contain Similar Concentrations of Fiber

The effect of alfalfa maturity on ration utilization and lactation performance by high producing dairy cows was measured in a 13-wk lactation study. Eighteen multiparous Holsteins were fed one of three rations containing first crop alfalfa hay harvested at early vegetative (36.1% NDF), late bud (51....

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Veröffentlicht in:Journal of dairy science 1989-09, Vol.72 (9), p.2301-2307
Hauptverfasser: Kaiser, R.M., Combs, D.K.
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description The effect of alfalfa maturity on ration utilization and lactation performance by high producing dairy cows was measured in a 13-wk lactation study. Eighteen multiparous Holsteins were fed one of three rations containing first crop alfalfa hay harvested at early vegetative (36.1% NDF), late bud (51.7% NDF), or full bloom (51.7% NDF) maturity. Forage to concentrate ratios were 68:32, 53:47, and 45:55 for early vegetative, late bud, and full bloom rations, respectively. As offered, the late bud ration was higher in fiber (34.6% NDF) than either the early vegetative (31.8% NDF) or full bloom (30.6% NDF) rations. Cows fed the ration with early vegetative hay produced as much 4% FCM (32.5kg) as cows fed the ration containing more fiber (late bud, 32.9kg) or the later maturity hay (full bloom, 32.2kg). Milk fat and protein composition were not affected by ration fiber concentration or forage maturity. Average dry matter intake per day and body weight change were similar across treatments. Time spent ruminating was similar for the three rations (6.8 h/d), but eating time was affected by forage maturity (early vegetative, 4.4 h/d vs. full bloom, 5.7 h/d). Cows receiving the higher fiber diet (late bud, 6.2 h/d) spent more time eating than cows receiving the lower fiber diets. Fiber concentration and forage maturity did not affect milk production, milk composition, or body weight change of high producing dairy cows in early lactation.
doi_str_mv 10.3168/jds.S0022-0302(89)79361-9
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Eighteen multiparous Holsteins were fed one of three rations containing first crop alfalfa hay harvested at early vegetative (36.1% NDF), late bud (51.7% NDF), or full bloom (51.7% NDF) maturity. Forage to concentrate ratios were 68:32, 53:47, and 45:55 for early vegetative, late bud, and full bloom rations, respectively. As offered, the late bud ration was higher in fiber (34.6% NDF) than either the early vegetative (31.8% NDF) or full bloom (30.6% NDF) rations. Cows fed the ration with early vegetative hay produced as much 4% FCM (32.5kg) as cows fed the ration containing more fiber (late bud, 32.9kg) or the later maturity hay (full bloom, 32.2kg). Milk fat and protein composition were not affected by ration fiber concentration or forage maturity. Average dry matter intake per day and body weight change were similar across treatments. Time spent ruminating was similar for the three rations (6.8 h/d), but eating time was affected by forage maturity (early vegetative, 4.4 h/d vs. full bloom, 5.7 h/d). Cows receiving the higher fiber diet (late bud, 6.2 h/d) spent more time eating than cows receiving the lower fiber diets. 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Eighteen multiparous Holsteins were fed one of three rations containing first crop alfalfa hay harvested at early vegetative (36.1% NDF), late bud (51.7% NDF), or full bloom (51.7% NDF) maturity. Forage to concentrate ratios were 68:32, 53:47, and 45:55 for early vegetative, late bud, and full bloom rations, respectively. As offered, the late bud ration was higher in fiber (34.6% NDF) than either the early vegetative (31.8% NDF) or full bloom (30.6% NDF) rations. Cows fed the ration with early vegetative hay produced as much 4% FCM (32.5kg) as cows fed the ration containing more fiber (late bud, 32.9kg) or the later maturity hay (full bloom, 32.2kg). Milk fat and protein composition were not affected by ration fiber concentration or forage maturity. Average dry matter intake per day and body weight change were similar across treatments. Time spent ruminating was similar for the three rations (6.8 h/d), but eating time was affected by forage maturity (early vegetative, 4.4 h/d vs. full bloom, 5.7 h/d). Cows receiving the higher fiber diet (late bud, 6.2 h/d) spent more time eating than cows receiving the lower fiber diets. Fiber concentration and forage maturity did not affect milk production, milk composition, or body weight change of high producing dairy cows in early lactation.</description><subject>ALIMENT POUR ANIMAUX</subject><subject>ALIMENTACION DE LOS ANIMALES</subject><subject>ALIMENTATION DES ANIMAUX</subject><subject>Animal Feed</subject><subject>ANIMAL FEEDING</subject><subject>Animals</subject><subject>Body Weight</subject><subject>BOVIN LAITIER</subject><subject>Cattle - metabolism</subject><subject>Cattle - physiology</subject><subject>COMPOSICION</subject><subject>COMPOSITION</subject><subject>CONTENIDO DE FIBRAS</subject><subject>COWS</subject><subject>DAIRY CATTLE</subject><subject>Dietary Fiber - metabolism</subject><subject>Eating</subject><subject>FEEDS</subject><subject>Female</subject><subject>FIBRE CONTENT</subject><subject>FOIN</subject><subject>GANADO DE LECHE</subject><subject>HAY</subject><subject>HENO</subject><subject>Lactation</subject><subject>Least-Squares Analysis</subject><subject>Linear Models</subject><subject>MEDICAGO SATIVA</subject><subject>Milk - analysis</subject><subject>PIENSOS</subject><subject>Pregnancy</subject><subject>RACION</subject><subject>Random Allocation</subject><subject>RATION</subject><subject>RATIONS</subject><subject>TENEUR EN FIBRES</subject><subject>VACA</subject><subject>VACHE</subject><issn>0022-0302</issn><issn>1525-3198</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1989</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>K30</sourceid><recordid>eNqNkW9rFDEQxoMo9ax-AUGIFERfbE2yu9nkZTk9FSqC13sdsruTXo790yZZy_npnb07KvhKCITM_OaZyTyEvOXsMudSfdy18XLNmBAZy5l4r_SHSueSZ_oJWfBSlFnOtXpKFo_Ic_Iixh0-uWDlGTkTZSkLyRbkfpN853_b5MeBjo7ebAMA_W7TFHzyEOfYVecsHlrv6Sfrw54ux4dIV9DSn4e6SNPWJowOyfqBrn3vOxvmdwNDCicGhVa-hvCSPEO5CK9O9znZrD7fLL9m1z--fFteXWdNwaXOnAIhZWGdACVa1jpZ1G3BoNK8tm2Jw-dWNVWNP9HM1Y7bWmNJA3XJKieq_Jy8O-rehfF-gphM72MDXWcHGKdo5o0pLQWCF_-Au3EKA85muKoqplkuS6T0kWrCGGMAZ-6C723YG87MbIpBU8zBFDNv3Ch9aMGNxto3pw5T3UP7WHly4e-oW3-7ffABTOxt1yHNZ9VKGG1EzjiCr4-gs6Oxt8FHs1lrTAg1qyyPScCt_vIQTGw8oActKjbJtKP_j1n_AHnTtEk</recordid><startdate>198909</startdate><enddate>198909</enddate><creator>Kaiser, R.M.</creator><creator>Combs, D.K.</creator><general>Elsevier Inc</general><general>Am Dairy Sci Assoc</general><general>American Dairy Science Association</general><scope>FBQ</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7WH</scope><scope>K30</scope><scope>PAAUG</scope><scope>PAWHS</scope><scope>PAWZZ</scope><scope>PAXOH</scope><scope>PBHAV</scope><scope>PBQSW</scope><scope>PBYQZ</scope><scope>PCIWU</scope><scope>PCMID</scope><scope>PCZJX</scope><scope>PDGRG</scope><scope>PDWWI</scope><scope>PETMR</scope><scope>PFVGT</scope><scope>PGXDX</scope><scope>PIHIL</scope><scope>PISVA</scope><scope>PJCTQ</scope><scope>PJTMS</scope><scope>PLCHJ</scope><scope>PMHAD</scope><scope>PNQDJ</scope><scope>POUND</scope><scope>PPLAD</scope><scope>PQAPC</scope><scope>PQCAN</scope><scope>PQCMW</scope><scope>PQEME</scope><scope>PQHKH</scope><scope>PQMID</scope><scope>PQNCT</scope><scope>PQNET</scope><scope>PQSCT</scope><scope>PQSET</scope><scope>PSVJG</scope><scope>PVMQY</scope><scope>PZGFC</scope><scope>7X8</scope></search><sort><creationdate>198909</creationdate><title>Utilization of Three Maturities of Alfalfa by Dairy Cows Fed Rations that Contain Similar Concentrations of Fiber</title><author>Kaiser, R.M. ; 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Eighteen multiparous Holsteins were fed one of three rations containing first crop alfalfa hay harvested at early vegetative (36.1% NDF), late bud (51.7% NDF), or full bloom (51.7% NDF) maturity. Forage to concentrate ratios were 68:32, 53:47, and 45:55 for early vegetative, late bud, and full bloom rations, respectively. As offered, the late bud ration was higher in fiber (34.6% NDF) than either the early vegetative (31.8% NDF) or full bloom (30.6% NDF) rations. Cows fed the ration with early vegetative hay produced as much 4% FCM (32.5kg) as cows fed the ration containing more fiber (late bud, 32.9kg) or the later maturity hay (full bloom, 32.2kg). Milk fat and protein composition were not affected by ration fiber concentration or forage maturity. Average dry matter intake per day and body weight change were similar across treatments. Time spent ruminating was similar for the three rations (6.8 h/d), but eating time was affected by forage maturity (early vegetative, 4.4 h/d vs. full bloom, 5.7 h/d). Cows receiving the higher fiber diet (late bud, 6.2 h/d) spent more time eating than cows receiving the lower fiber diets. Fiber concentration and forage maturity did not affect milk production, milk composition, or body weight change of high producing dairy cows in early lactation.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>2556460</pmid><doi>10.3168/jds.S0022-0302(89)79361-9</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record>
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subjects ALIMENT POUR ANIMAUX
ALIMENTACION DE LOS ANIMALES
ALIMENTATION DES ANIMAUX
Animal Feed
ANIMAL FEEDING
Animals
Body Weight
BOVIN LAITIER
Cattle - metabolism
Cattle - physiology
COMPOSICION
COMPOSITION
CONTENIDO DE FIBRAS
COWS
DAIRY CATTLE
Dietary Fiber - metabolism
Eating
FEEDS
Female
FIBRE CONTENT
FOIN
GANADO DE LECHE
HAY
HENO
Lactation
Least-Squares Analysis
Linear Models
MEDICAGO SATIVA
Milk - analysis
PIENSOS
Pregnancy
RACION
Random Allocation
RATION
RATIONS
TENEUR EN FIBRES
VACA
VACHE
title Utilization of Three Maturities of Alfalfa by Dairy Cows Fed Rations that Contain Similar Concentrations of Fiber
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